[PATCH v2] iwlwifi: mvm: Do not require PHY_SKU NVM section for 3168 devices

Sultan Alsawaf sultan.alsawaf at canonical.com
Tue Mar 24 23:55:45 UTC 2020

From: Dan Moulding <dmoulding at me.com>

BugLink: https://bugs.launchpad.net/bugs/1868442

The logic for checking required NVM sections was recently fixed in
commit b3f20e098293 ("iwlwifi: mvm: fix NVM check for 3168
devices"). However, with that fixed the else is now taken for 3168
devices and within the else clause there is a mandatory check for the
PHY_SKU section. This causes the parsing to fail for 3168 devices.

The PHY_SKU section is really only mandatory for the IWL_NVM_EXT
layout (the phy_sku parameter of iwl_parse_nvm_data is only used when
the NVM type is IWL_NVM_EXT). So this changes the PHY_SKU section
check so that it's only mandatory for IWL_NVM_EXT.

Fixes: b3f20e098293 ("iwlwifi: mvm: fix NVM check for 3168 devices")
Signed-off-by: Dan Moulding <dmoulding at me.com>
Signed-off-by: Kalle Valo <kvalo at codeaurora.org>
(cherry picked from commit a9149d243f259ad8f02b1e23dfe8ba06128f15e1)
Signed-off-by: Sultan Alsawaf <sultan.alsawaf at canonical.com>
 drivers/net/wireless/intel/iwlwifi/mvm/nvm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/nvm.c b/drivers/net/wireless/intel/iwlwifi/mvm/nvm.c
index 70b29bf16bb9..60296a754af2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/nvm.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/nvm.c
@@ -308,7 +308,8 @@ iwl_parse_nvm_sections(struct iwl_mvm *mvm)
 		/* PHY_SKU section is mandatory in B0 */
-		if (!mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
+		if (mvm->trans->cfg->nvm_type == IWL_NVM_EXT &&
+		    !mvm->nvm_sections[NVM_SECTION_TYPE_PHY_SKU].data) {
 				"Can't parse phy_sku in B0, empty sections\n");
 			return NULL;

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